Report BoringSSL benchmark speeds in us and add READMEs.

benches/boringssl/README.md

@@ -0,0 +1,11 @@
+This directory contains programs for benchmarking various algorithms implemented
+by BoringSSL, so as to compare their performance with the implementations in
+libcrux. As of now, there is only a program to benchmark Kyber768.
+
+In order to build this benchmark, run the following sequence of commands:
+
+1. `mkdir build && cd build`
+2. `cmake -G"Ninja" ..`
+3. `ninja`
+
+To then run the benchmark, in the `build` directory, simply run `./kyber768`

benches/boringssl/kyber768.cxx

@@ -29,8 +29,6 @@
 
 static const uint64_t SECONDS_TO_MEASURE_FOR = 1;
 
-static const double MICROSECONDS_IN_A_MILLISECOND = 1000.0;
-
 // TimeResults represents the results of benchmarking a function.
 struct TimeResults {
   // num_calls is the number of function calls done in the time period.
@@ -39,9 +37,8 @@ struct TimeResults {
   uint64_t us;
 
   void Print(const std::string &description) const {
-    printf("Each %s operation took %f milliseconds.\n", description.c_str(),
-           (static_cast<double>(us) / MICROSECONDS_IN_A_MILLISECOND) /
-               static_cast<double>(num_calls));
+    printf("Each %s operation took %f microseconds.\n", description.c_str(),
+           static_cast<double>(us) / static_cast<double>(num_calls));
   }
 };
 

benches/circl/README.md

@@ -0,0 +1,5 @@
+This directory contains programs for benchmarking various algorithms implemented
+by CIRCL, so as to compare their performance with the implementations in
+libcrux. As of now, there is only a program to benchmark Kyber768.
+
+In order to run this benchmark, simply run `make`.